It allows to get into the affected computer.
It generates a large amount of network traffic activity with the consequent consumption of bandwidth.
It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies.
It spreads
, across the Internet.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:

June 30, 2010

Detection updated on:

June 30, 2010

Statistics

No

Brief Description

Downloader.XSA is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions.

In the local network:
it generates a large amount of network activity and consumes bandwidth.

It uses several methods in order to avoid detection by antivirus companies:

It prevents scanning tools from running, such as Windows Registry Editor, FileMonitor, etc.

Downloader.XSA uses the following propagation or distribution methods:

Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.

Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.